Home / 153,975.02-212,425.89-90,289.58

Finding the Fourth Proportional to 153,975.02, 212,425.89 and 90,289.58

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Solution

The fourth proportional to 153,975.02, 212,425.89 and 90,289.58 is: 124,564.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,975.02 : 212,425.89 = 90,289.58 : x
  2. Step 2: Convert to fraction form
    153,975.02/212,425.89 = 90,289.58/x
  3. Step 3: Cross multiply
    153,975.02x = 212,425.89 × 90,289.58
  4. Step 4: Simplify right side
    153,975.02x = 19,179,844,389.23
  5. Step 5: Solve for x
    x = 19,179,844,389.23/153,975.02
  6. Step 6: Final answer
    x = 124,564.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.